Quartz Breccia Cemented by Tourmaline

By Miguel A Heredia

During the 39th week of the year (September 21 to September 27, 2026), at least 32 press releases were issued by companies operating in Mexico. Of these, eleven related to deals and corporate matters, eleven covered resource and development updates, seven announced financial activities, two presented exploration results, and one reported production issues. ON MEXICO ISSUES, no relevant news. ON EXPLORATION, In Sonora, Algo Grande reported drilling assay results from the Cerro Grande skarn discovery at its Adelita project. In Chihuahua, Kingsmen released additional drilling results from its Las Coloradas project.  ON MINING, Endeavour reported temporary reduced capacity at its Guanacevi mine in Durango. ON FINANCING, Equinox announced that it elected to exercise its rights to redeem all of its outstanding USD $172.5 million aggregate principal amount of 4.75% Convertible Senior Notes due October 15, 2028. Vortex Metals upsized its previously announced non-brokered private placement to CAD $1.4M. Silver Tiger announced a CAD $87M Bought Deal Financing and provided an update on the expected capital expenditures for the construction of the mine and process plant for El Tigre in Sonora. Aztec Minerals closed its upsized bought deal private placement for gross proceeds of CAD $6.4M. Silver Dollar announced that it intends to extend the expiry date of 3,022,600 share purchase warrants from October 29, 2026 to October 29, 2027. Silver Spruce received conditional approval from TSX Venture Exchange of its debt settlement of CAD $20,000 to be satisfied by the issuance of 210,526 common shares at a deemed price of $0.095 per share. Goldgroup closed a non brokered private placement for gross proceeds of USD $122M. ON RESOURCES AND DEVELOPMENT, Antimony Resources informed that its Tecomatlán antimony processing plant in Puebla advance toward wet commissioning and the processing of prepared mineralized material. Chesapeake provided an update on its proprietary heap oxidation technology.  GoGold provided an update on the construction of its Los Ricos South project in Jalisco. Heliostar announced progress update on Ana Paula Feasibility Study. Kootenay reported drill results from Lupe Vein at its Columba project in Chihuahua. Mammoth Resources provided and update on its field activities at its Tenoriba project in Chihuahua. Minaurum reported advancement of underground rehabilitation and exploration at the historic Promontorio mine in its Alamo Silver project in Sonora.  Silverco released a positive Preliminary Economic Assessment for its La Negra mine in Queretaro. Southern Silver reported drill results from its Cerro Las Minitas project in Durango. Minaurum reported high-grade silver drill results from the Europa, Quintera, San Jose, and Promontorio Sur Vein Zones, as part of its ongoing Phase II, 50,000m resource-expansion drilling program at the Alamos Silver Project in Sonora. Torex reported strong results from its ongoing drilling and exploration program at the Morelos property in Guerrero.   ON DEALS AND CORPORATE ISSUES, Americas Gold and Silver announced that it will participate in Reuters Momentum AI Austin 2026. Barksdale announced the appointment of George Ogilvie as Chairman, David Lotan as Director Nominee, Chris Stewart as President and Chief Executive Officer and David Birch as Chief Financial Officer. Capital Silver announced that it will participate in the Gentile Mining Investor Forum in London. Elementary Royalty acquired an uncapped 2.5% gross revenue royalty covering Silverco´s La Negra mine in Queretaro. Apollo Silver reported that Ejido Benito Juarez in Buenaventura Municipality in Chihuahua called a second community assembly to consider lifting the moratorium on mineral exploration affecting the Cinco de Mayo project, and later on clarified misleading media reports. Luca Mining acquired Cozamin mine in Zacatecas from Capstone Copper Corp. for total upfront consideration of USD $290M and up to an additional USD $95M in deferred and contingent consideration. Silver Hammer announced that its common shares have been approved for trading on the OTCQB Venture Market in the United States under the symbol “HAMRF” and that its common shares are now eligible for electronic clearing and settlement through the Depository Trust Company in the United States. Regency Silver announced that it has been selected to present at the 26th MK-Equity Investment Conference, hosted by MK-Equity, the family office of Michael Kott, on Wednesday, September 30th, 2026, in Munich, Germany. Royalties Inc. reported the Zacatecas Attorney General formally serves Capstone Copper’s Cozamin Mine with criminal document demand for production evidence. Candelaria Mining announced voting results from its annual general meeting of shareholders. ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUE

• No relevant news.

ON EXPLORATION  

• Algo Grande Copper Confirms 68.43 Metres of Copper-Silver-Gold Mineralization Across Two Zones in Hole AG-CG-PH2-002, Including a New Zone of 38.20 Metres at 1.0% CuEq: Algo Grande Copper Corporation
• Kingsmen Intersects 218 g/t AgEq over 6.5 Meters on New Structure, 150 Meters of High-Grade Hole LC-25-010: Kingsmen Resources Ltd

ON MINING

• Endeavour Silver Reports Temporary Reduced Capacity at its Guanacevi Mine: Endeavour Silver Corp

ON FINANCING

• Equinox Gold Announces Redemption of its Outstanding 4.75% Convertible Senior Notes Due October 2028: Equinox Gold Corp
• Vortex Metals Upsizes Non-Brokered Private Placement to $1,400,000 Due to Investor Demand: Vortex Metals Inc
• Silver Tiger Metals Inc. Announces $87 Million Bought Deal Financing and  El Tigre Project Capital Cost Update: Silver Tiger Metals Inc
• Aztec Minerals Announces Closing of Upsized C$6.4 Million Bought Deal Private Placement Including Concurrent Exercise of Underwriter’s Option: Aztec Minerals Corp
• Silver Dollar Resources Proposes Warrant Expiry Extension: Silver Dollar Resources Inc
• Silver Spruce Receives TSXV Conditional Approval of Debt Settlement: Silver Spruce Resources Inc
• Goldgroup Closes Record US$122 Million Non-Brokered Private Placement: Goldgroup Mining Inc

ON RESOURCES AND DEVELOPMENT

• ANT Commences Trading as Tecomatlán Advances Toward Commissioning:  Antimony Resources Limited
• Chesapeake Announces Proprietary Heap Oxidation Technology Updates: Chesapeake Gold Corp
• GoGold Advances Los Ricos South Construction: GoGold Resources Inc
• Heliostar Provides Progress Update on Ana Paula Feasibility Study: Heliostar Metals Ltd
• Kootenay Silver Reports Drill Results from Lupe Vein as 60,000-Meter Columba Program Advances: Kootenay Silver Inc
• Mammoth Provides Update on Field Activities at its Tenoriba Gold-Silver Property, Mexico: Mammoth Resources Corp
• Minaurum Advances Underground Rehabilitation and Exploration at the Historic Promontorio Mine: Minaurum Silver Inc
• Silverco Releases Positive PEA for Producing La Negra Mine Outlining a Low Capital, 8.2Year Mine Life Generating After-Tax NPV of $329 Million: Silverco Mining Ltd
• Southern Silver Intersects 35.0 Metres Averaging 188g/t Ag, 4.9% Pb and 4.6% Zn(399g/t AgEq) at Cerro Las Minitas Project, Durango, Mexico: Southern Silver Exploration Corp
• Minaurum Resource Step-Out Drilling Returns 3.40 m of 397 g/t AgEq at Europa Sur, 1.90 m of 323 g/t AgEq at Quintera, and 0.90 m of 1469 g/t AgEq at San Jose in Alamos Silver Project: Minaurum Silver Inc 1
• Regency Silver to Present at the 26th MK-Equity Investment Conference in Munich: Regency Silver Corp
• Torex Gold Provides Q3 2026 Morelos Drilling & Exploration Update: Torex Gold Resources Inc

ON DEALS AND CORPORATE ISSUES

• Americas Gold and Silver CEO Paul Andre Huet to Participate in Reuters Momentum Ai Austin 2026: Americas Gold and Silver Corporation
• Barksdale Announces C$14.0 Million Private Placement, Appoints George Ogilvie as Chairman, Proposes David Lotan as Director Nominee, Appoints Chris Stewart as President and Chief Executive Officer and David Birch as Chief Financial Officer: Barksdale Resources Corp
• Capitan Silver to Participate in the Gentile Mining Investor Forum in London: Capitan Silver Corp
• Elemental Royalty Announces US$290 Million Acquisition of Royalty and Streaming Portfolio, Strategic Divestment of Generation Business and management Succession: Elemental Royalty Corporation
• Apollo Silver Reports Ejido Benito Juárez to Reconvene Assembly on Cinco de Mayo Access Agreement: Apollo Silver Corp
• Apollo Silver Clarifies Media Reports Regarding Ejido Benito Juárez Assembly: Apollo Silver Corp 1
• Luca Mining Announces Acquisition of the Cozamin Mine, Creating a Leading Polymetallic Producer: Luca Mining Corp
• Silver Hammer Announces Uplisting to the OTCQB Venture Market in the United States, and Receives DTC Eligibility: Silver Hammer Mining Corp
• Royalties Inc. Reported the Zacatecas Attorney General Formally Serves Capstone Copper’s Cozamin Mine with Criminal Document Demand for Production Evidence: Royalties Inc
• Candelaria Announces Voting Results of Annual General Meeting of Shareholders: Candelaria Mining Corp

ON SOCIAL RESPONSIBILITY

• No relevant news

Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.

On the picture below, a quartz breccia cemented by tourmaline in a porphyry copper project in Chihuahua, Mexico. Photo taken by Miguel A Heredia.